My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX17693AATC+T
- Part No.:
- MAX17693AATC+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 12-WFDFN Exposed Pad
- Datasheet:
-
MAX17693AATC+T.pdf
- Description:
- IC REG FLYBACK ADJ 1.72A 12TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,734
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX17693AATC+T from Maxim Integrated is a 4.2V–60V no-opto isolated flyback converter IC with integrated 76V/245mΩ nMOSFET, fixed-frequency peak-current-mode control, and primary-side output voltage regulation. It delivers up to 1.4W output power, supports programmable 100kHz–350kHz switching, and eliminates optocoupler and secondary-side error amplifier in industrial isolated supplies.
For engineers reviewing the MAX17693AATC+T datasheet, MAX17693AATC+T pinout, MAX17693AATC+T application, or MAX17693AATC+T equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, temperature-compensated no-opto operation details, and two confirmed alternative parts for PLC I/O, gate drive, and telecom power designs.
Technical Context
The MAX17693AATC+T implements primary-side sensing by sampling the reflected flyback waveform at the LX node during secondary diode conduction, using an internal differential amplifier to generate IRFB proportional to secondary winding voltage. Its algorithm samples the SET pin voltage near zero secondary current to minimize transformer parasitic and diode forward-voltage effects on regulation.
It features internal loop compensation (no external COMP network required), EN/UVLO with 1.215V turn-on threshold, OVI protection (MAX17693A only), soft-start via SS pin, and SYNC/DITHER pin supporting either external clock synchronization (1.10×–1.32× fSWRT) or ±4%–±12% spread-spectrum dithering via RC network.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.2V to 60V - supports wide-input industrial and telecom rails without pre-regulation. |
| Integrated nMOSFET | 76V VDS, 245mΩ RDS(ON) - enables compact 1.4W isolated flyback without external high-voltage switch. |
| Switching Frequency | 100kHz to 350kHz, programmable via RT resistor - balances EMI, transformer size, and efficiency across applications. |
| Output Regulation Accuracy | ±1.2% over -40°C to +125°C - achieved via primary-side sensing with temperature-compensated SET feedback path. |
| Shutdown Current | 2.5µA - enables ultra-low-power disable mode for energy-sensitive systems. |
| OVI Protection | 1.215V rising threshold (MAX17693A only) - allows precise input overvoltage shutdown without external comparator. |
| Thermal Shutdown | 160°C with 10°C hysteresis - protects against sustained overload or poor heatsinking in enclosed environments. |
Pinout & Package
MAX17693AATC+T is housed in a 12-pin, 3mm × 3mm TDFN-EP package (package code TD1233+1C) with exposed pad for thermal dissipation. Junction-to-ambient thermal resistance is 41°C/W on multilayer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Primary input supply rail | 4.2V–60V input reference; connects to primary winding and FB resistor divider; requires ≥1µF ceramic bypass. |
| GND | Primary-side ground reference | Return for all internal circuits; must connect to primary PCB ground plane with low-inductance path. |
| VCC | LDO output for internal bias | 5.77V regulated output; requires 2.2µF ceramic capacitor to GND; can be overdriven by auxiliary winding above 5.9V. |
| SYNC/DITHER | Frequency control interface | Configurable for external clock sync (1.10×–1.32× fSWRT) or ±4%–±12% spread-spectrum dithering via RC network. |
| RT | Switching frequency programming | Resistor to GND sets fSW from 100kHz–350kHz; open-circuit defaults to 200kHz. |
| TC/VCM | Temperature compensation & common-mode setting | Programs diode forward-voltage tempco (-1 to -2mV/°C) and selects internal common-mode range via RTC/VCM resistor. |
| SS | Soft-start timing control | Capacitor to GND extends soft-start beyond default 5ms; controls inrush current into output capacitor. |
| SET | Feedback reference node | Regulated at 1.0V (±1.2%); carries current proportional to reflected output voltage; used with RSET for output scaling. |
| OVI | Input overvoltage monitor | MAX17693A-only pin; 1.215V threshold triggers hiccup shutdown; requires resistor divider from VIN. |
| EN/UVLO | Enable and undervoltage lockout | 1.215V turn-on / 1.1V turn-off thresholds; enables precise input voltage sequencing and brownout protection. |
| FB | Primary-side feedback sense | Connected to LX via resistor; senses reflected flyback voltage during secondary conduction; no optocoupler needed. |
| LX | Switching node | Drain of integrated nMOSFET; connects directly to primary winding; requires low-inductance layout to minimize ringing. |
Key Features
| Feature | Design Value |
|---|---|
| No-opto primary-side regulation | Eliminates optocoupler, TL431, and secondary bias winding - reduces BOM count and saves ≥20% PCB area vs. traditional flyback. |
| Integrated 76V/245mΩ nMOSFET | Enables single-chip isolated DC-DC conversion up to 1.4W without external high-voltage switch or driver. |
| Internal loop compensation | Removes need for external compensation network (COMP pin unused), simplifying design and improving stability margin. |
| Programmable EN/UVLO and OVI | Allows precise input voltage turn-on, brownout recovery, and overvoltage shutdown using only two external resistors (MAX17693A). |
| Temperature-compensated diode drop correction | TC/VCM pin adjusts SET current based on junction temperature (+1.85mV/°C), maintaining output accuracy across -40°C to +125°C ambient. |
| Hiccup-mode overcurrent protection | 16384-cycle timeout ensures safe restart after fault while preventing thermal runaway during sustained short-circuit conditions. |
Applications
| PLC I/O Module Power | IGBT Gate Drive Supply |
|---|---|
Use Scenario: Isolated 15V/100mA auxiliary supply for digital I/O channel conditioning and isolation barriers in programmable logic controllers. IC Role / Device Role / Timing Role: Primary-side regulated flyback controller providing galvanically isolated, low-noise bias for optocouplers and level shifters. Use Value: Eliminates optocoupler in feedback path, reducing component count and enabling compact 25mm² PCB footprint per channel. |
Use Scenario: 15V/200mA isolated supply powering high-side and low-side gate drivers in motor inverter stages. IC Role / Device Role / Timing Role: No-opto flyback controller delivering tightly regulated, fast-transient gate bias with hiccup protection during shoot-through faults. Use Value: Maintains ±1.2% output accuracy over -40°C to +125°C, ensuring consistent gate drive strength across temperature extremes. |
| Industrial Telecom Power | Isolated Sensor Interface Supply |
Use Scenario: 5V/250mA isolated DC-DC stage in 48V telecom line card power architecture, feeding downstream POL converters. IC Role / Device Role / Timing Role: Wide-input flyback controller operating from -36V to -72V nominal (with polarity-reversal front-end), synchronized to system clock. Use Value: SYNC/DITHER pin enables external clock sync to avoid beat frequencies on shared backplane bus, meeting CISPR-32 Class B EMI limits. |
Use Scenario: 3.3V/100mA isolated supply for analog sensor signal conditioning circuits in hazardous-area field transmitters. IC Role / Device Role / Timing Role: Low-power, thermally robust flyback controller delivering intrinsically safe bias with 2.5µA shutdown current. Use Value: 160°C thermal shutdown and -40°C to +125°C ambient rating ensure reliable operation in explosion-proof enclosures with limited airflow. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar no-opto isolated flyback converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UCC28911DR | 700V integrated MOSFET, 80kHz–130kHz fixed frequency, no OVI pin, external compensation required. | Lacks input overvoltage protection and temperature-compensated diode drop correction; suited for higher-voltage AC/DC but not precision low-voltage isolated rails. | Select UCC28911DR only when >400V input is required and OVI/TC features are unnecessary. |
| LNK3206P | 725V integrated switch, 66kHz fixed frequency, no programmable frequency, no SYNC/DITHER, no OVI, no TC/VCM. | Designed for cost-sensitive offline SMPS; lacks precision regulation, spread-spectrum, and industrial temperature support. | Choose LNK3206P for non-isolated or low-accuracy AC/DC applications where BOM cost dominates performance. |
Compared with UCC28911DR and LNK3206P, the MAX17693AATC+T uniquely combines wide 4.2V–60V input, programmable 100kHz–350kHz operation, OVI protection, and temperature-compensated diode drop correction - making it optimal for precision industrial isolated supplies where space, accuracy, and reliability are critical.
Availability
MAX17693AATC+T is available at Aetrix Electronics and suitable for PLC I/O modules, IGBT gate drive supplies, and industrial telecom power systems requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant sourcing.
Supply support for MAX17693AATC+T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated, now part of Analog Devices, designs high-performance analog and mixed-signal ICs for industrial, automotive, and communications markets, emphasizing integration, reliability, and power efficiency.
The MAX17693AATC+T belongs to Maxim's Rainier family of isolated power devices, engineered specifically to simplify and shrink isolated DC-DC solutions by eliminating optocouplers and secondary-side regulation circuitry.
FAQ
What is the maximum output power achievable with MAX17693AATC+T?
The MAX17693AATC+T delivers up to 1.4W of isolated output power under typical conditions (e.g., 24V input, 5V/250mA output). Actual power depends on transformer design, layout, ambient temperature, and cooling. Derating is required above +70°C ambient due to thermal limits; the device's 160°C junction shutdown and 41°C/W θJA (multilayer board) define practical continuous power boundaries.
Does MAX17693AATC+T require an external optocoupler for feedback?
No, the MAX17693AATC+T does not require an external optocoupler. It uses primary-side sensing to sample the reflected flyback voltage at the LX pin during secondary diode conduction, then regulates output voltage via the SET and FB pins. This eliminates the optocoupler, secondary-side error amplifier, and associated bias winding - reducing component count and PCB area by up to 20%.
How is input overvoltage protection implemented on MAX17693AATC+T?
Input overvoltage protection (OVI) is implemented on the MAX17693AATC+T via the dedicated OVI pin. A resistor divider from VIN to GND sets the trip threshold; when the OVI pin voltage exceeds 1.215V (typ), the device stops switching and enters hiccup mode. It resumes normal operation only after the OVI pin voltage falls below 1.1V (typ). This feature is exclusive to the MAX17693A variant.
Can MAX17693AATC+T synchronize its switching frequency to an external clock?
Yes, the MAX17693AATC+T supports external clock synchronization via the SYNC/DITHER pin. An external clock signal (1.10×–1.32× the nominal fSWRT) applied to this pin synchronizes the internal oscillator to avoid low-frequency beat interference in multi-converter systems. The device detects the 9th consecutive rising edge and locks to the external clock on the 10th or 11th pulse, ensuring deterministic phase alignment.
What is the purpose of the TC/VCM pin on MAX17693AATC+T?
The TC/VCM pin on MAX17693AATC+T serves dual functions: it selects the internal common-mode voltage range (KVCM ≥ 2.5 or < 2.5) and programs temperature compensation for the output rectifier diode's forward voltage drop. A resistor (RTC/VCM) sets a PTAT current injected into the SET node, offsetting diode Vf drift with temperature - maintaining output regulation accuracy across -40°C to +125°C ambient.
MAX17693AATC+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 12-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Flyback
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.2V
- Voltage - Input (Max):
- 60V
- Voltage - Output (Min/Fixed):
- 1.215V
- Voltage - Output (Max):
- 42.6V
- Current - Output:
- 1.72A
- Frequency - Switching:
- 100kHz ~ 350kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-TDFN (3x3)
MAX17693AATC+T FAQ
1.How can I place an order for MAX17693AATC+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX17693AATC+T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX17693AATC+T reliable?
The price and inventory of MAX17693AATC+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX17693AATC+T is usually 5 days.
3.What payment methods are accepted for MAX17693AATC+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX17693AATC+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX17693AATC+T?
MAX17693AATC+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX17693AATC+T order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX17693AATC+T?
For technical support, including MAX17693AATC+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX17693AATC+T requirements.
6.How does Aetrix verify that MAX17693AATC+T is sourced from the original manufacturer or authorized distributors?
All MAX17693AATC+T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX17693AATC+T meets industry standards.
7.What is the process for return or replacement of MAX17693AATC+T?
All MAX17693AATC+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX17693AATC+T, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX17693AATC+T part is unused and in its original packaging.
Return procedure for MAX17693AATC+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX17693AATC+T Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
